Visual C++ .NET/GUI Form/CheckBoxListBox

ListBox and CheckBoxListBox

<source lang="csharp">

 using namespace System;
 using namespace System::ComponentModel;
 using namespace System::Collections;
 using namespace System::Windows::Forms;
 using namespace System::Data;
 using namespace System::Drawing;
 public ref class Form1 : public System::Windows::Forms::Form
 {
 public:
   Form1(void)
   {
     InitializeComponent();
           array<Object^>^ Items = gcnew array<Object^> { 
               "Appleman", "Challa",    "Chand",    "Cornell",
               "Fraser",   "Gunnerson", "Harris",   "Rammer", 
               "Symmonds", "Thomsen",   "Troelsen", "Vaughn" 
           };
           clBox->Items->AddRange(Items);
           lBox->Items->AddRange(Items);
           cBox = gcnew array<CheckBox^>(Items->Length); 
           
           int j = cBox->Length/2;
           for (int i = 0; i < j; i++)
           {
               // Build Left Column
               cBox[i] = gcnew CheckBox();
               cBox[i]->Location = Drawing::Point(50, 160+(30*i)); 
               cBox[i]->TabIndex = i+2; 
               cBox[i]->Text = Items[i]->ToString(); 
               cBox[i]->CheckStateChanged += 
                   gcnew EventHandler(this, &Form1::cBox_CheckStateChanged); 
               
               // Build Right Column
               cBox[i+j] = gcnew CheckBox();
               cBox[i+j]->Location = Drawing::Point(180, 160+(30*i)); 
               cBox[i+j]->TabIndex = i+j+2; 
               cBox[i+j]->Text = Items[i+j]->ToString(); 
               cBox[i+j]->CheckStateChanged += 
                   gcnew EventHandler(this, &Form1::cBox_CheckStateChanged); 
           }
           // Add all CheckBoxes to Form
           Controls->AddRange(cBox);
 }
 private:
       System::Windows::Forms::ListBox^  lBox;
       System::Windows::Forms::CheckedListBox^  clBox;
       array<CheckBox^>^ cBox; 
   void InitializeComponent(void)
   {
     this->lBox = (gcnew System::Windows::Forms::ListBox());
     this->clBox = (gcnew System::Windows::Forms::CheckedListBox());
     this->SuspendLayout();
     // 
     // lBox
     // 
     this->lBox->FormattingEnabled = true;
     this->lBox->Location = System::Drawing::Point(356, 32);
     this->lBox->Name = L"lBox";
     this->lBox->Size = System::Drawing::Size(120, 264);
     this->lBox->TabIndex = 3;
     this->lBox->SelectedIndexChanged += gcnew System::EventHandler(this, &Form1::lBox_SelectedIndexChanged);
     // 
     // clBox
     // 
     this->clBox->FormattingEnabled = true;
     this->clBox->Location = System::Drawing::Point(12, 32);
     this->clBox->MultiColumn = true;
     this->clBox->Name = L"clBox";
     this->clBox->Size = System::Drawing::Size(323, 79);
     this->clBox->TabIndex = 2;
     this->clBox->ThreeDCheckBoxes = true;
     this->clBox->SelectedIndexChanged += gcnew System::EventHandler(this, &Form1::clBox_SelectedIndexChanged);
     this->clBox->ItemCheck += gcnew System::Windows::Forms::ItemCheckEventHandler(this, &Form1::clBox_ItemCheck);
     // 
     // Form1
     // 
     this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
     this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
     this->ClientSize = System::Drawing::Size(494, 392);
     this->Controls->Add(this->lBox);
     this->Controls->Add(this->clBox);
     this->Name = L"Form1";
     this->Text = L"Splitting The Check List Box";
     this->ResumeLayout(false);
   }
           System::Void clBox_ItemCheck(System::Object^ sender, 
                                System::Windows::Forms::ItemCheckEventArgs^ e)
       {
        // update state of CheckBox with same index as checked CheckedListBox
           cBox[e->Index]->CheckState = e->NewValue; 
       }
       System::Void clBox_SelectedIndexChanged(System::Object^ sender, 
                                               System::EventArgs^ e)
       {
        // update ListBox with same selected item in the CheckedListBox
           lBox->SelectedItem = clBox->SelectedItem->ToString(); 
       }
       System::Void lBox_SelectedIndexChanged(System::Object^ sender, 
                                              System::EventArgs^ e)
       {
        // update CheckedListBox with same selected item in the ListBox
           clBox->SelectedItem = lBox->SelectedItem; 
       }
       void cBox_CheckStateChanged(Object^ sender, EventArgs^ e) 
       {
        // update state of CheckedListBox with same index as checked CheckBox
           CheckBox^ cb = (CheckBox^)sender;
           clBox->SetItemCheckState(Array::IndexOf(cBox, cb), cb->CheckState);
       }
 };

[STAThreadAttribute] int main(array<System::String ^> ^args) {

 Application::Run(gcnew Form1());
 return 0;

}

 </source>